S$515 Cheap Flights from Washington to Bangkok

View S$515 flight on Wed, 28 Jan, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)

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Cheap Flights from Washington to Bangkok (IAD-BKK)

Prices were available within the past 7 days and start at S$515 for one-way flights and S$1,529 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Tue, 10 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,529 Return, found 2 days ago
S$1,529
Return
found 2 days ago
Select All Nippon Airways flight, departing Tue, 10 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,529 found 2 days ago
United
Tue, 10 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,539 Return, found 2 days ago
S$1,539
Return
found 2 days ago
Select United flight, departing Tue, 10 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,539 found 2 days ago
United
Wed, 11 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,593 Return, found 21 hours ago
S$1,593
Return
found 21 hours ago
Select United flight, departing Wed, 11 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,593 found 21 hours ago
United
Tue, 10 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,641 Return, found 2 days ago
S$1,641
Return
found 2 days ago
Select United flight, departing Tue, 10 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,641 found 2 days ago
United
Tue, 10 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,689 Return, found 2 days ago
S$1,689
Return
found 2 days ago
Select United flight, departing Tue, 10 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,689 found 2 days ago
Emirates
Wed, 11 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,785 Return, found 21 hours ago
S$1,785
Return
found 21 hours ago
Select Emirates flight, departing Wed, 11 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,785 found 21 hours ago
Etihad Airways
Tue, 10 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,786 Return, found 2 days ago
S$1,786
Return
found 2 days ago
Select Etihad Airways flight, departing Tue, 10 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,786 found 2 days ago
Ethiopian Airlines
Wed, 11 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,806 Return, found 21 hours ago
S$1,806
Return
found 21 hours ago
Select Ethiopian Airlines flight, departing Wed, 11 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,806 found 21 hours ago
All Nippon Airways
Wed, 11 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,821 Return, found 21 hours ago
S$1,821
Return
found 21 hours ago
Select All Nippon Airways flight, departing Wed, 11 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,821 found 21 hours ago
American Airlines
Wed, 11 Feb - Sun, 15 Feb
IAD
Washington
BKK
Bangkok
S$1,879 Return, found 21 hours ago
S$1,879
Return
found 21 hours ago
Select American Airlines flight, departing Wed, 11 Feb from Washington to Bangkok, returning Sun, 15 Feb, priced at S$1,879 found 21 hours ago

Find the cheapest month to fly from Washington (IAD) to Bangkok (BKK)

March is typically the cheapest month to fly

From S$1,013 - S$2,156 per traveller.
Washington to Bangkok route information
Origin airport
Washington Dulles Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air France, All Nippon Airways, American Airlines, Delta, Emirates, Ethiopian Airlines, Etihad Airways, KLM, Korean Air, Qatar Airways, Thai Airways International, Turkish Airlines, United
Return price
S$1,529
Distance
14075 km

Perfect flights from Washington to Bangkok

Your Journey from Washington to Bangkok

Start your unforgettable journey with Expedia. Our broad selection of flights from Washington to Bangkok caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Etihad Airways, United, All Nippon Airways, Delta, American Airlines, Emirates, Ethiopian Airlines. Our selection of flights from Washington Dulles Intl. to Suvarnabhumi Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Washington to Bangkok Flights

Experience the joy of finding cheap flights from Washington Dulles Intl. to Suvarnabhumi Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$515 and roundtrip prices from S$1,529*.
 

Pre-Flight Essentials

Ensure a smooth journey from Washington to Bangkok with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Bangkok

Picture yourself stepping off the plane in Bangkok and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Washington to Bangkok Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to Bangkok.
 

Beyond the Flight – Exploring Bangkok

With Expedia, your adventure extends beyond the flight. Explore Bangkok at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Washington to Bangkok with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Washington to Bangkok with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from IAD to Suvarnabhumi Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight from IAD to Suvarnabhumi Intl. Airport (BKK) was S$1,529. Fares this good don't wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Suvarnabhumi Intl. Airport (BKK)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Dulles Intl. Airport to Bangkok Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)?
With a flight distance of 14,200 kilometres between Chantilly and Bang Phli, this is a long-haul journey. Remember to stay hydrated and move your legs every now and then.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)?
At present, no airlines offer direct flights from IAD to Suvarnabhumi Intl. Airport (BKK). You'll have to book a flight with one or more stops. To score the best connections and price, lock in your airfare well in advance.
Are Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK) flight tickets cheaper when they're purchased at the last minute?
Tickets from IAD to BKK are available up to 12 months prior to departure on Expedia. And although you may occasionally score a fantastic last-minute deal, it's never something you can count on. Also, booking your flights in advance means you'll have more options — and you can avoid getting stuck in the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so keep checking in for all the latest specials.

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